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Designed to quickly test the condition of your relay out of the vehicle
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Full self-contained, no need to clamp cables onto the vehicles battery
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Accurately check the relay coil for circuit breaks, and switch contacts
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Test results provide good/bad indication; green LED pass, red LED fail
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Used to test the most common 12 volt 4 and 5 pin relays on today vehicles
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Compact design, nothing additional needed, and super easy to use
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Requires 4 AA batteries (included)
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